I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
opined opened oppugned
pained opined spined pined peined repined speaned panned punned peened repugned poind ponied paned reopened opened spanned weaponed pointe spooned japanned deepened deponed ripened pawned spinet penned pinned repinned spawned oppugned lippened happened cheapened